Process for the preparation of amphiphilic poly (N-vinyl-2-pyrrolidone) block copolymers
US7262253B2 · kind B2 · utility
4Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2003 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | May 28, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The instant invention provides a two-step polymerization process for preparing amphiphilic poly(N-vinyl-2-pyrrolidone), (PVP)-block-polyester copolymers and other diblock and triblock copolymers consisting of PVP as one block. The block copolymers of the invention can be used as vehicles for drug delivery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.